aboutsummaryrefslogtreecommitdiffstats
path: root/parameter/SystemClass.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'parameter/SystemClass.cpp')
-rw-r--r--parameter/SystemClass.cpp177
1 files changed, 177 insertions, 0 deletions
diff --git a/parameter/SystemClass.cpp b/parameter/SystemClass.cpp
new file mode 100644
index 0000000..62b6538
--- /dev/null
+++ b/parameter/SystemClass.cpp
@@ -0,0 +1,177 @@
+/* <auto_header>
+ * <FILENAME>
+ *
+ * INTEL CONFIDENTIAL
+ * Copyright © 2011 Intel
+ * Corporation All Rights Reserved.
+ *
+ * The source code contained or described herein and all documents related to
+ * the source code ("Material") are owned by Intel Corporation or its suppliers
+ * or licensors. Title to the Material remains with Intel Corporation or its
+ * suppliers and licensors. The Material contains trade secrets and proprietary
+ * and confidential information of Intel or its suppliers and licensors. The
+ * Material is protected by worldwide copyright and trade secret laws and
+ * treaty provisions. No part of the Material may be used, copied, reproduced,
+ * modified, published, uploaded, posted, transmitted, distributed, or
+ * disclosed in any way without Intel’s prior express written permission.
+ *
+ * No license under any patent, copyright, trade secret or other intellectual
+ * property right is granted to or conferred upon you by disclosure or delivery
+ * of the Materials, either expressly, by implication, inducement, estoppel or
+ * otherwise. Any license under such intellectual property rights must be
+ * express and approved by Intel in writing.
+ *
+ * AUTHOR: Patrick Benavoli (patrickx.benavoli@intel.com)
+ * CREATED: 2011-06-01
+ * UPDATED: 2011-07-27
+ *
+ *
+ * </auto_header>
+ */
+#include <dlfcn.h>
+#include <dirent.h>
+#include "SystemClass.h"
+#include "SubsystemLibrary.h"
+#include "AutoLog.h"
+
+#define base CConfigurableElement
+
+// Used by subsystem plugins
+typedef void (*GetSusbystemBuilder)(CSubsystemLibrary*);
+
+CSystemClass::CSystemClass(const string& strName) : base(strName), _pSubsystemLibrary(new CSubsystemLibrary)
+{
+}
+
+CSystemClass::~CSystemClass()
+{
+ delete _pSubsystemLibrary;
+}
+
+bool CSystemClass::childrenAreDynamic() const
+{
+ return true;
+}
+
+string CSystemClass::getKind() const
+{
+ return "SystemClass";
+}
+
+bool CSystemClass::loadSubsystems(string& strError, const vector<string>& astrPluginFolderPaths)
+{
+ CAutoLog autoLlog(this, "Loading subsystem plugins");
+
+ // Plugin list
+ vector<string> astrPluginFiles;
+
+ uint32_t uiFolderLocation;
+
+ for (uiFolderLocation = 0; uiFolderLocation < astrPluginFolderPaths.size(); uiFolderLocation++) {
+
+ // Folder for current SystemClass
+ string strPluginPath = astrPluginFolderPaths[uiFolderLocation] + "/" + getName() + "/";
+
+ // Get plugin list
+ getPluginFiles(strPluginPath, astrPluginFiles);
+ }
+ // Check at least one subsystem plugin available
+ if (!astrPluginFiles.size()) {
+
+ // No plugin found?
+ strError = "No subsystem plugin found";
+ }
+
+ // Actually load plugins
+ uint32_t uiPlugin;
+ // Start clean
+ _pSubsystemLibrary->clean();
+
+ for (uiPlugin = 0; uiPlugin < astrPluginFiles.size(); uiPlugin++) {
+
+ string strPluginFileName = astrPluginFiles[uiPlugin];
+
+ log("Loading subsystem plugin path \"%s\"", strPluginFileName.c_str());
+
+ void* lib_handle = dlopen(strPluginFileName.c_str(), RTLD_LAZY);
+
+ if (!lib_handle) {
+
+ // Return error
+ const char* pcError = dlerror();
+
+ if (pcError) {
+
+ strError = pcError;
+ } else {
+
+ strError = "Unable to load subsystem plugin " + strPluginFileName;
+ }
+
+ _pSubsystemLibrary->clean();
+
+ return false;
+ }
+
+ GetSusbystemBuilder pfnGetSusbystemBuilder = (GetSusbystemBuilder)dlsym(lib_handle, "getSusbystemBuilder");
+
+ if (!pfnGetSusbystemBuilder) {
+
+ strError = "Subsystem plugin " + strPluginFileName + " does not contain getSusbystemBuilder symbol.";
+
+ _pSubsystemLibrary->clean();
+
+ return false;
+ }
+
+ // Fill library
+ pfnGetSusbystemBuilder(_pSubsystemLibrary);
+ }
+
+ return true;
+}
+
+bool CSystemClass::getPluginFiles(const string& strPluginPath, vector<string>& astrPluginFiles) const
+{
+ log("Seeking subsystem plugins from folder \"%s\"", strPluginPath.c_str());
+
+ DIR *dirp;
+ struct dirent *dp;
+
+ if ((dirp = opendir(strPluginPath.c_str())) == NULL) {
+
+ return false;
+ }
+
+ const string strPluginPattern("-subsystem.so");
+
+ // Parse it and load plugins
+ while ((dp = readdir(dirp)) != NULL) {
+
+ string strFileName(dp->d_name);
+
+ // Check file name ends with "-susbsystem.so"
+ size_t uiPatternPos = strFileName.rfind(strPluginPattern, -1);
+
+ if (uiPatternPos != (size_t)-1 && uiPatternPos == strFileName.size() - strPluginPattern.size()) {
+ // Found plugin
+ astrPluginFiles.push_back(strPluginPath + strFileName);
+ }
+ }
+
+ // Close plugin folder
+ closedir(dirp);
+
+ return true;
+}
+
+const CSubsystemLibrary* CSystemClass::getSubsystemLibrary() const
+{
+ return _pSubsystemLibrary;
+}
+
+bool CSystemClass::init(string& strError)
+{
+ return base::init(strError);
+}
+